Ahmed, Houriya; Stuart, Hannah (2009). Hizb Ut-Tahrir Ideology and Strategy. Henry Jackson Society. p. 108. http://henryjacksonsociety.org/wp-content/uploads/2013/01/HIZB.pdf2016年1月28日閲覧. "[Taji Mustafa being interviewed on BBC Today programme] the idea of a Caliphate – a unifying authority for which the Muslim world…which we think will bring stability – these basic ideas of Islam which enjoy popular support, are now being labelled as beyond the pale – as terrorism."